Refrigerating coil



Nov. 5, 1929.

J. T'. HAMILTON 4 REFRIGERATING COIL Filed March 2, 192*:

2 Sheets-Sheep INVENTOR.

ATTORNEYS.

JJQQ Patented-1N ;-5 i929 4 1 nrfen'rn 'e con. f a

Application.nledfiarelrt, rear. ser al no; mess.

invention relates to improvements for refrigerating coils for storage places, and it consists in the combinations, constructions,

and arrangements, hereinatter'described and 5 claimed. L 1

An object of my invention is to' provide a refrigerating coil which maybe disposed alongthe walls of the storage compartment,

thus taking pupa minimum amount of space."

This construction permits radiating'ffins of the required area to be connected tothe cool ing pipes without taking up any more actual storage room in the storage compartment and without the necessity of providing a larger expansion header. An expansion header and cooling pipes of standard size.

' may be manufactured ;then fins may be added I ufactured consists of the tank 3 and stub pipes 7 and 8. To these'pipes are secured to give correct coil'siz'e at the time of'installation for various sized compartments.

A further object of my invention is to provide a device of the type described which has more cooling efiect than a standard cooling refrigerating coil which takes up onefourth to one-third the total storage area of the box. Furthermore, the cooling fins are so arranged as to cause more complete circulation of'air thru the box or compartment. the movement of air being so rapid because of so lack-of obstructions as to permit the coil to operate at a higher temperatune than other coils now on the market, yet keep the temperature within the compartment at the required point. This higher temperature of I the cooling coil prevents the pipes from becoming coated with frost and thus permits the device to operate for more eficiently.

Other objects and advantages will appear in the following; specification, and the novel features of the invention will. be particularly pointed out in the appended claims.

y invention is illustrated in the accomj panymg drawings, icing a part of this epplication, in whichn Figure l is a 1' View of the device,

' downwardly to be cured around the H Figure 2 is a ofFig rel, a

Figure 3 is an enlarged detail view of a, portion ofthe device, and p Figure dis a" section along, the line of Figurefir v l In carrying -out my invention, I provide section along thealine a box 1 of any: desired size and having storage shelves 2. therein, I disposefthe expansion header in the upper left hand corner and connect this tank 3 by pipes t to a compressor 5 and a cooling coil 6 in the usual manner.

'One set of refrigerating coils 7 extends from the bottom of the tank 3 across the top. ofthe boxywhile the other set 8" projects along the side of the box as shown in Flgures 1 and 2. The unit as manthe -shaped pipes land 85' the connection being efiected by a novel joint, now to be described. I r

A radiating fin 9 is-secured to the stub pipes 7 bysolder or other suitable fastening means and a fin 10 is secured to the stub pipes 8" p A fin 11 of the required area for the box is provided with a U-shaped bend 12 and with openings 13 and ltfor receiving the pi es 7 and 7 respectively.v

In 'gure 3, I show the fin 10 as being bent and provided with openings 15 for receiving the pipes 8. A radiating fin 16 of the required area has its upper end bent and provided with openings 17 for receiving the stub pipes ,8. Figure 3 shows how the pipes 7 and 7' and 8 and 8' are fastened for partially telescoping within each other for forming a 'oint. The joining of'the plates 9 and 11 and the plates 10 and 16 form housings which receive thejoints ofthe pipes. These housings are provided with openings 18 (see Figure 4) torpermitting lead in a molten state joints, thereby provi ing a gas-tight sea whe n .the lead cools. Figure 4 also shows PfiltliJlODS' it as 7 dis vents warpin of fins 9 and 11. Fewer screws 24 will there ore be required in securingjhe fins to the box.

The sloping of the plate 11 toward the plate is for causing any condensations to flow A baflle plate 21 connects the plates 11 and 10 together. Openin 22 permit condensations forming upon t e top of the plate 11 to flow onto the to of the bafile plate 21 and there be conveyed to the plate 10 and the platz)l6 by means of openings 23 (see Figure The 0 nings 23 also permits the pipes 8 to exten thru the heme plate 21. From the foregoing descri tion of the various parts of the device, t e operation thereof may be readily understood. The refrigerant will fiowirom the tank 3 thru the pipes 7' and 7 and will expand in the tubes, returning as gas to the header, and also the ipes 8' and 8 and back to the header, therey cooling the'pipes. The pipes, in turn, cool the radiatin fins h conduction. The flow of air in the x is s own by the arrows in Figure 1. The. disposin of the plates across the top and one side 0 the box creates a forced circulation, and this circulation is so rapid that there is not so great a difierence in tem eratures at the lower right hand corner of t e box and at the uper left hand corner of the box as there is in standard devices. The pipes 7 and 8 can, thereiore he kept-at a temperature. well above the frost ng point. An insulating layer of irost will, therefore, not iornr upon the pipes. This obviates the necessity of meltin away the trust from time to time and a so permits the refrigerant to have a direct cooling efiect upon the air within the box.

l have already mentioned how the device takes up less space than the standard machine, which takes up anywhere from one-fourth to one-third the space-which should be used for storage urpoees. The pipes 7 and 8 can be made anger for the freer flow of the refrigerant therethru because the air does not have to pass between the pipes as is the case with the standard machine. a This does away with the necessity of forcing-all the air thru small openings. It should be'borne in mind, due to the fact that the pipes extend across ed along the sides of the pipes.

ing Water the top and one side oflthe box that the area of the ,pipgs may be increased creasin t foo storage space. Screws 24 are use for securing the device to the walls. The tank 3 is supported by stra s, not shown. A brine tank may be dispgse between the pipe 7 and the top of the x, and a drawer may be dis osed in this brine tank for holdon preparin artificial ice. The drawer 25 is shown in lgures 1 and 3.

\ lt-should be noted that the plate 16 has without deopenings 26 therein for permittin the air to pass therethru and be more quic y cooled by contacting with both sides of the plate or fin. v

I claim:

1. The combination with a store e compertinent, pf an expansion header isposed in the upper corner of said compartment, and expansiontpipes extending from said header across the top of the compartment and in close proximity to the ceilin and radiating fins secured to said pipes an extending substantially in the plane of the compartment ceilin 2. lue combination with a store compartment, an expansion header, an expansion pipes communicating with said header, some 0 said pipes exten ing in close proximity to the ceiling and other oi the pipes extending in close proximit to a side wall of said compartment, and re iating fins mcured I to said pipes and extendin%s1ibstantially parallel with the ceiling an one wall of the compartment.

space.

a. A. device of the type described, comprising an expansion header, two sets of ex-' pansion ipes extending substantially at ri ht ang es to each other, and radiating fins o difierent sizes securable to said pipes for 9 without taking up any additions storage causing the fins to extend substantially at i right angles to each. other. v 5. The combination of a storage compartmeat, with an expansion header disposed in the upper corner of said com artment, cooling coils extending from. sai header, some.

of said coils being disposed in close prommity to the top and in close proximity to a side wall of said compertinent, and radiating fins secured to said pipes,- the upper fin beinginclined downwardly at an angle toward said side fin.

other of the coils extending.

res

. E60 '3. The combination with a store e com- 6. The combination of a storage compartment, with an expansion header disposed in the vupper corner of said compartment, ex-

pansion coils extending from said header. some of said coils being disposed in close proximity to the top and other of said coils extending in close proximity to a side of said compartment, and radiating fins secured to said pipes, the upper fin being inclined downwardlyv at an angle toward said side fin, a water outlet for said compartment,

and means for admitting any condensation on said fins to flow into said outlet.

In testimony whereof I afix my signature. JAMES TELFORD HAMILTUN. 

